Mullard KB/D CV4003 M8136 ECC82 Box Plate Valve Tube NOS Boxed (V16)
CV4003 ECC82 12AU7 Valve Tube. 631 Code in the Glass. Grey Box Plates, Halo Getter.
CV4003 ECC82 12AU7 Valve Tube. 631 Code in the Glass. Grey Box Plates, Halo Getter.